About Allocation Of System-Wide Remote I/O - Mitsubishi Electric FX3U-128ASL-M User Manual

FX -128ASL-M User's Manual
3U
3.4

About allocation of system-wide remote I/O

Number of input/output points on
whole system
1. Number of input/output points
(including input/output occupied points)
Expansion
board
Main unit
Special
adapter
Remote I/O station Remote I/O station Remote I/O station Remote I/O station
2. Number of remote I/O points
Remote I/O
Remote I/O
Remote I/O
When using two or more network masters which occupy remote I/O available at the same time, the number of
remote I/O points is assigned in turn from the network master located nearest to the main unit.
(In the case of above figure, the assignment sequence is "[1]
Network masters which occupy remote I/O available at the same time
• FX -128ASL-M
3U
• FX -128BTY-M
3U
• FX -16CCL-M (Excluding the case in which it is connected to the [1] or [2] side and CC-Link parameters
3U
are set by the sequence program)
*1. If the required number of remote I/O points cannot be occupied depending on the connected system,
input points are assigned first to remote I/O points from the network master located nearest to the
main unit, and then output points are assigned to remaining available remote I/O points from the
network master located nearest to the main unit.
*2. When connecting the FX
network master which occupies remote I/O, the following restriction is imposed:
- It is necessary to set CC-Link parameters using network parameters of GX Works2.
If CC-Link parameters are set by the sequence program, all remote I/O are occupied. As a result, the FX
cannot be used at the same time with other network masters.
*3. If the required number of remote I/O points cannot be occupied depending on the connected system,
the number of input/output points is assigned from the network master located nearest to the main
unit.
Network masters which occupy remote I/O not available at the same time
• FX -16CCL-M
2N
• FX -32ASI-M
2N
Example of calculating I/O when the FX
• When the main unit is FX
M is connected to the far ([2]) side
If the number of I/O occupied points on the main unit side is 160 points (including 8 input/output points
occupied by the FX
16CCL-M is 128 points,
384 - 160 - 128 = 96 points
→
Remote I/O (slave module) corresponding to 96 points can be connected to the FX
26
FX /FX PLC: Up to 384 points
3U 3UC
FX /FX PLC: Up to 256 points
3G 3GC
FX /FX PLC: Up to 256 points
3U 3UC
FX /FX PLC: Up to 128 points
3G 3GC
Input/output Special
extension function
unit/block block
CC-Link/LT
FX /FX PLC: Up to 256 points
3U 3UC
FX /FX PLC: Up to 128 points
3G 3GC
Remote I/O Remote I/O
Remote I/O Remote I/O
Remote I/O Remote I/O
*1
*1
*2*3
-16CCL-M to a side ([1] or [2] side) nearer to the main unit than another
3U
, the FX
3U 3U
-16CCL-M/FX
3U 3U
The network master which
occupies remote I/O
CC-Link/LT (FX -16CCL-M,
3U
master FX -128BTY-M,
3U
FX -128ASL-M)
3U
[1]
Remote I/O
Remote I/O
Remote I/O
→
[2]
-128ASL-M and FX
3U 3U
-16CCL-M is connected to the near ([1]) side and the FX
-128ASL-M) and the number of remote I/O points on the FX
3 System Configuration
3.4 About allocation of system-wide remote I/O
The network master which The network master which
occupies remote I/O occupies remote I/O
(FX -16CCL-M, (FX
3U 3U
FX -128BTY-M, FX
3U 3U
FX -128ASL-M) FX
3U 3U
[2]
→
[3]").
-16CCL-M are used at the same time
-16CCL-M,
-128BTY-M,
-128ASL-M)
[3]
-16CCL-M
3U
-128ASL-
3U
-
3U
-128ASL-M.
3U